Anyone from New England who has run Chicago: which races did you run before?
I like to do a half marathon as a key race about 4-6 weeks out from a marathon. For Chicago (Oct 13 this year) that would be Sept 1/8/15. In addition I'll definitely jump in some summer 5k/10ks, but I feel like getting that longer one in is important - preferably with a similar course profile (flat, in this case).